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P3b/P4b deepening, landing under the P7 program (PLAN-PH-P34B-P7.md 1.2, wave 2-D package D2): "一条纯度 grep 门：split 构建下这些 memo 键里不得出现前端指针类型；接 CI". scripts/ci/espryt_memo_purity.py, a sibling of link_seam_purity.py in the same style: a hard-coded source list, a code_only() comment strip, (pattern, message) rules, and a --self-test that runs the negative controls and then the real scan in one invocation - which is what lets test.yml pass only --self-test and still get the gate. Wired in next to link_seam_purity.py. It scopes the rules to the BRACES of the families the plan names - ResolvedTextureBindingMemo, SamplerPassMemo, UnitSamplerLookupMemo, TwinLookupMemo, StateBackendObjectRegistry (the program registry and its five siblings) - plus the image sweep, which is seven file statics rather than a struct and is matched by name. Scoping matters: these two files pass frontend pointers around legitimately in hundreds of places, and a file-wide grep would be a list of exceptions rather than a gate. Guard-awareness is a small conditional walker, not a preprocessor: it recognises #if MOBILEGL_PIPE_LEGACY_MEMOS, #if !MOBILEGL_BUILD_DISAGGREGATED and the #else of #if MOBILEGL_BUILD_DISAGGREGATED, which is every spelling these files use, and says so in the docstring. Six allow-list entries, each carrying its one-line reason. The two that matter: StateBackendObjectRegistry's UnorderedMap<StateObject*, Entry> and ResolvedTextureBindingMemo's type-erased `const void* program` are the PULL build's only arms - deleting them moves pull .text and fails G1's 0/0/0/0, so they retire with the pull path (P13), not here. The other four are memo VALUES rather than keys. Seven negative controls turn red; four positive controls stay green, including a LEGACY_MEMOS arm, the #else of a DISAGGREGATED arm, the allow-listed type-erased key and a frontend pointer outside every memo family. Verified once more by injecting a fresh unguarded ProgramObject* field into the real ResolvedTextureBindingMemo: the gate reddens and names it.